Harrow



(No Model.)

W. H. HULINGS. Harrow.

No. 234,576. Patented Nov. 16, I880.

Wazqi 21% /1/272 fir UNTTE STATES Fries,

PATENT HARROW.

SPECIFICATION forming part of Letters Patent No. 234,576, dated November 16, 1880.

Application filed August 14, 1880. (No model.)

.To all whom it may concern:

Be it known that I, WILLIAM H. HULINGS, of Menlo Park, in the county of San Mateo and State of California, have invented certain new and useful Improvements in Harrows; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the artto which it pertains to make and use it, reference being bad to the accompanying drawings, which form part of this specification.

My invention relates to an improvement in barrows; and it consists in a casting for each separate tooth, which casting has a flange at or near its center for bearing upon the top of the barrow-beam, and a part or portion extending above the flange for the set-screw to pass throughthat is, to hold the tooth in positioi1and a portion to pass down through the hole in the barrow-beam, as will be more fully described hereinafter.

The object of my invention is to provide a casting which is to be inserted in each toothhole of the barrow-beams, and thus avoid having to drive the teeth through the beams at the risk of splitting the beams or otherwise injuring them.

Figure 1 is an end view of my invention. Fig. 2 is a vertical section of the same.

A represents the harrowbean1; B, the harrow-tooth; O, the casting through which the tooth passes, and D the set screw which passes through the side of the casting and bears against the side of the tooth, so as to hold it in any desired position. This casting has a flange, G, of suitable width, formed around it at or near its center, which flange bears directly upon the top of the beam, and serves not only for fastening screws or bolts to pass through, but to steady thecasting in place.

Extending above this flange for any suitable distance is the part or portion a, through which the set-screw D passes, for the purpose of bearing against the side of the tooth B. By having this part a extend above the flange G, and passing through it the set-screw to hold the tooth, the tooth can be adjusted up and down so as to run at any desired depth.

Extending down below the flange G is the part c, which-extends down through the beam, and which, together with the part to, forms a long continuous bearin g for the tooth. This part c is passed down through the hole in the beam and prevents the necessity of driving the teeth through the beam, as is generally done.

I am aware that iron bearings have been passed through the beams for the teeth; but in no instance has this bearing been provided with a flange to rest solidly upon the top of the beam, so as to prevent the strain upon the tooth from having a tendency to injure the beam, nor having a vertical part, a, to pass a set-screw through, so as to adjust the teeth to any desired depth.

Having thus described my invention, I claim- In a barrow, the combination of the beam A and tooth B with the casting 0, having the flange G, for resting upon the top of the beam, and the two parts a e, projecting beyond each side of the flange, and the set-screw D, for holding the tooth in any desired position, substantially as shown and described.

In testimony that I claim the foregoing I have hereunto set my hand this 31st day of J uly, 1880.

W. H. HULINGS.

Witnesses:

CHAS. MARVIN, W. H. PARKER. 

